National Geographic marked its 125th anniversary by inviting readers to submit their most stunning photos. (The Big Four Ice Caves, a large network of tunnels formed by snow, in Granite Falls, Washington)

National Geographic

The photos will be part of the publication's newly designed website Your Shot, and loosely organized around the theme of its October 2013 anniversary issue. (Thousands of tadpoles swimming along a trail in a pond of lilies)

National Geographic

Grand Canyon in Arizona

National Geographic

Hang Son Doong, the world's largest cave, in Vietnam

National Geographic

Abandoned farm house near Sanger, Texas

National Geographic

Traditional fishing at the Burigoalini river in Gabura, Satkhira, Bangladesh

National Geographic

Ijtema, the second largest Muslim gathering in the world, in Tongi, Bangladesh